Summary: This thesis deals with the Iberian interregional trade relations. It begins by presenting the reasons why it is important to look at these relationships. These include the potential emergence of new commercial realities, based on relations between regions of the two countries, as a result of the simultaneous integration in the European Union and its enlargement to the East that has brought the two countries in a position greater interdependence. As no data, no statistical production continued on these relations, the author shows that, in order to deepen knowledge about the same, we have to get parent estimate of interregional trade flows, within the Iberian Peninsula. Thus, in this thesis, the author proceeds to the estimated matrices interregional trade flows in the Iberian States. They are considering the 20 regions NUT II peninsulares (5 Portugal and 15 from Spain). These arrays are estimated for the years
1993 to 1999. Arrays have also been obtained for the years 1990-1992 and 2000, but incomplete. Arrays are unbundled with a sectoral classification of 11 sectors. In the total produced 132 arrays have been different, which are in volume two, in a paper form that allows viewing complete single glance. The procedures for estimating, based on gravitational models and the use of data transport as proxy variables, have the advantage of being applicable frequency annulled with the current production statistics. The author intends to update these arrays annually in the coming years, so that the data may serve as a basis for a whole new line investigaicón on interregional trade flows Iberian. In addition, there is an analysis of international trade relations of the two countries, which serves as a framework even par first analysis of Iberian interregional trade relations. What is most evident is that the border is still a barrier to the very strong relationships already mentioned, it is concluded that you are not taking advantage of the potential for development that would further advance trade relations among all regions the two countries.
